Radio instrument mounting



May 1, 1928. 1,668,418

P. L. PENDLETON RADI O INSTRUMENT MOUNTING Filed June 4. 1926 4Sheets-Sheet l i; J /ffffmys May 1, 1928.

LGGSS P. L. PENDLETON RADIO INSTRUMENT MOUNTING Filed June 4. 19216 May1, 1928.

LGGSAMS P. L. PENDLETON RADIO INSTRUMENT MOUNTING Filed June 4:. 1926 4Sheets-Sheet 3 v May l, 1928.

P. L. PENDLETON RADIO INSTRUMENT MOUNTING Filed June 4. 1926 4Sheets-Sheet 4 Patented May 1, 1928.

UNITED STATES PATENT OFFICE.

PYAM Li PENDLETON, 0F PROVIDENCE, RHODE ISLAND, AssIeNoR To EDGAR. w.

MARTIN, LAWRENCE C. MARTIN, AND GEORGE W. BIEECKER, TRUSTEES OF TmMARTIN-COPELAND COMPANY.

RADIO INSTRUMENT MOUNTING.

Application led June 4,

This invention relates to radio apparatus and particularly to animproved iitment for mounting different types of radio instruments andtheir connected dials and operating-means.

One object of the invention is to provide means for mounting a radioinstrument and its dial at the back of a. panel, with means ,at thetrout of the panel for operating the instrument and turning the dial torender its indicia visible through a sight-opening in the panel.

Another object of the invention is to provide means for mounting theinstrument and dial on the panel. to support them in operative positionWithout the vuse of brackets, braces or the likefastened to a sub-panelor base. f

Another object of the invention is to provide a device ot the typespecified which is simple in structure' and efficient in use forsecurely mounting the radio instrument, dial and operating-means on Athepanel With "a minimum number of drilling operations.

Another object of the invention is to provide an instrument mounting anddial-operating means self-contained in a unitary structure adapted forattachment to the panel `ivithoutother means of support.

Another object of the invention is to provide a transparent dial withmeans on the mounting for supplying illumination at the back of the dialto facilitate the reading of its graduations or indicia through thesightopening. s

Another object of the invention is to provide a contact switch embodiedin the mounting for controlling the current to the illuminating lamp forthe dial.

Further. objects ot the improvement are set forth in the followingspecification which describes a preferred form of construction of theinvention and several modifications thereof as illustrated bytheaccompanying drawings. In the dra-wings:

Fig. l is a front elevation of a radio-receiving set showing theinstrument panel and illustrating the general arrangement of the dialsand controls thereon; l

Fig. 2 is an enlarged sectional View taken on line 2 2 of Fig. l andillustrating the complete instrumentand dial-mounting 1926. Serial No.113,883.

withits operating-means, illuminating lamp and switch as embodied inaunitary tment applied to the panel;

Fig. 3 is a sectional View taken on line 3 3 of Fig. 2, showing therearward side of the dlal, its operating-means, the` instrument-mountingand the switch for the lamp;

Fig. 4 is a similar sectional view taken o n line of Fig. 2, looking inthe opnosite direction, and illustrating the same elements in detail;

Fig. 5 is a vertical sectional view taken on line 2 2 of Fig. l andillustrating the instrumentand dial-operating means more in detail; t

Fig. 6 is a vertical sectional view taken through the sight-opening inthe panel and showing the mounting fastened to the panei by means of abezel secured in the opening; I Fig. 7 is a detailed View part-sectionalon line 7 7 of Fig. 6;

Fig. 8 is a view similar to Fig. 2 showing a modification in thearrangement, of the mounting for the instrument and dial and theoperating-means therefor, as combined with a diferent form of switch forthe illuminating lamp; and

Fig. 9 is a rearward view of the same.

In radio-receiving sets it is the usual practice to mount thevariable-condenser, variometer, variocoupler and other instruments atthe rear of the front panel of the cabinet and to connect them to beoperated from dials rotatable on the front of the panel. In some casesthe dials have been mounted at the rear of the panel to be read throughsight-openings therein, but in the manufacture of units for use bamateurs in building radio apparatus this latter practice has not beenfeasible on account of the mechanical difiiculties. With back-panelmountings it has been the common practice to support the instrumentsfrom the'base of the cabinetv or from a sub-panel arranged thereabove,so as not to mar the face of the panel with numerous screw-holes, butsuch aconstruction requires considerable drilling and fitting and eXtrabrackets and Supports -Which take up valuable space. In theA pres'- entinvention a particular object of the imof the bezel frame, i

provement is to eliminate the sub-panel, supports, brackets and likeconnections and to thus eliminating the drilling of a large number ofholes in the panel.

Referring to Fig. 1 of the drawings. 2 designates the cabinet of aradio-receiving set and 3 is the vert-ical front panel havingsight-openings 4 through which the dials for the various instruments areVisible. The operating' knobs for the instruments are shown at 5 and thebuttons for the switches for controlling the lights which illuminate thedials are designated 6. i

In one form of construction of the invention as illustrated in Figs. 1to 5, the instrument mounting for attachment to the back of the panel 3.takes the form of a vertical framework or strut 8, projecting upwardlyfrom a bearing-member 7 for the instrument operating-spindle 9 andattached to the panel at ai point some distance thereabove, seeparticularly Fig. 2. In this View the instrument carried by the mountingis represented as a variable-condenser 10 of conventional type. As hereshown the condenser 10 comprises a U-shaped frame 15 provided withbearings 16 for the spindle ,17 which carries the rotor-plates 18. seealso Fig. 5. The fixed plates 19 are held in an insulated member 20projecting from the frame 15, and as the general construction of thistype of instrument is well knownto'those versed in, the art furtherdescription thereof is unnecessary. Suiiice it to state that the spindle17 of the condenser 1() is inserted through a bearing hub or sleeve 21rotatably secured i -to the upright strut or framework 8 pre- `viouslyreferred to.

As show-n in detail in Fig. 5. the bearing hub,d 21 has a reducedportion 22 journalled in ahole in the vertical strut or framework 8.with a shouldered flange 24 arranged to abut the forward face of thestrut. Abutting the opposite face'of the strut 8 is a disk or collar 25which is held fast on the reduced portion 22 of the-hub 21 by swaging orriveting over the end of the latter at 26. At the opposite end of thehub. 21 is a 'setscrew 27 which is set up against the spindlel 17 tosecure the hub .rota-tively herewith. It will thus be seen that the hub21 which is heldfast on the spindle 17 will turn therewith, being freeto rotate in its bearing in the strut 8 and braced from the strut by theextended bearing faces of the shoulder 24 and collar 25 which abut thesides thereof. The condenser 10 is thus supported from the strut ormounting 8 by means of the hub 21, and preferably the frame of theinstrument is braced from the strut at a point above. the spindle. Asshown in Fig. 2, a hub or boss 28 is usually provided on the frame 15 ofthe condenser 10 for attaching it to the panel of the radio cabinet andin the present construction this boss 'is used to brace t-he instrumentfrom the strut or mounting 8. For this purpose a screw 30 carrying awasher 31 is inserted through a vertical slot 32 in the strut 8, seeFig.'3, and projecting through a hub-or washer 33 is screwed into the.boss 28 on the frame 15. By using washers 33 of different length orthickness the instrument frame may be properly spaced from the strut inaccordance with the requirements of its bearings for theI spindle 17. Inmounting the condenser or other instrument in this manner on the strut 8one or several screw-holes inthe panel are eliminated, the numbervarying with the type of instrument used.

As previously noted, the variable-condenser 10 or other instrument isoperated from the spindle 9 which is journalled in the bearing-member orhub 7, see Figs. 2 and 5, and 4projects through the panel 3 with thefinger-knob 5 at its outer end. The bea-ringmember or hb 7 may hesecured to the lower end of the mounting or strut 8 by any suitablemeans, and as hereinillustrated in its inner end Ais reduced in diameterat 11 and inserted through a hole in the strut and riveted over onthe'rearward side thereof. The forward end of the hub 7 is also reducedin diameter at 12 to adapt it t0 be inserted through a hole in the panel3 with its shouldered portion 13 abutting the rearward side thereof. Thereduced portion 12 of the sleeve 7 is screw-threaded at its end to adaptit to receive a nut 14 which screws against a suitable washer 34 toclamp the hub or bearing 7 snugly in placeon the panel 3. The

`knob 5 is fastened to the forward end of the spindle 9 by any suitablemeans suchv as a set-screw 35.

The means for connecting the spindle 9 to operate the condenser 1() orother instrunient may consist of suitable gearing and,

as herein shown, this .gearing is preferably .rearward end which may beformed integral therewith or suitably secured thereon. The beveled edgesof the pinion 40 engage between the opposite edges of two overlappingannular plates or sectors 41 and 42, see Fig. 5. As shown 'moreparticularly lin Figs. 3

llU

-in the form of a complet-e ring or annulus.

Usually, however, it is only required to turn the operating-shaft orspindle 17 -through 180 degrees so that in most cases the sectors 41, 42extend through only slightly more than half 'a circumference as.illustrated in Figs. 3 and 4. rlhe plates or annuli 41, 42 are supportedfrom the hub 21 by means of a cross-strip 44 made integral with landlextending between the sides of their rims.

This double strip 44, formed as a part of each of the overlying platesor sectors 41, 42, has curved arms 45, 46 merging with the circular rimsof the plates. At the center of the strip 44 is a circular opening`through which the reduced portion 23 of the hub 21 projects. A collar 47is forced on to this reduced portion 23 of the hub 21 to clamp thecross-member 44 snugly against a shoulder 43 whereby the sectors 41, 42will be held both axially of and rotatably with the hub and the spindle17 carrying said hub. It will be noted from Fig. 5 of the drawings thatwith the beveled edge of the pinion 40 inserted between the rims of thesectors or annuli 41, 42 the latter will be sprungr apart so that theinherent resiliency of the plates provides a frictional contact with thepinion. Thus, as explainedin the prior patent application above referredto, the turning of the shaft 9 and its pinion 40 will act to rotate theplates or sectors 41, 42 to turn the condenser-spindle 17 at a .reducedrate of speed.I In this way the condenser or other instrument may beoperated to secure a very fine vernier adjustment thereof. 1t will benoted from Fig. 5 that in order to provide clearance for the -engagementof the pinion 4() with the inner edges of the annular plates or sectors41, 42 the hub 7 is slotted at 49 to adapt the rim of the plates to passtherethrough.

Attached to and rotatable with the sectors or plates 41, 42 is` a dial50 which is arranged parallel with the panel 3 and spaced at a slightdistance back from its rearward face.' The dial 50 is preferablyconstructed of Celluloid or other semitrans.

parent or translucent material and is attached to the plates-or sectors41, 42 by means of posts or studs 51 projecting for- Wardly therefrom.The posts 51 may have their rearward ends reduced in diameter andriveted through holes in the eross-melnber 44 of the plates 41, 42 asshown in Fig. 5. The dial is fastened to their forward ends by means vofscrews 53 screwed into the posts to clamp the dial thereagainst; washers54 and 55 being used on the opposite faces of the dial to more securelyhold it in place. A portion of the dial 50 is cut away in conformationwith the cutout por- (tions of the plates 41, 42 to accommodate thespindle 9 which projects through thefront of the panel, the hub 7 beingslotted at 57, see Fig. 5, to adapt the circular rim of the dial to passtherethrough.

It will be understood from the above that .when the knob 5 is turned toYrotate the spindle 9 and spindle 17 to adjust the condenser 10 or otherinstrument the dial 5() will be turned with the plates 41 and 42 toindicate the extent of movement of the spindle 17,-01, in other words,the degree of adjustment of the instrument connected thereto.

In the embodiment of the invention as illustrated in Figs. 1 to 5 of thepresent drawings the rim of the dial 50 is graduated and marked withindicia which are exposed to view through the sighteopening 4 arrangedabove the operating knob 5 and toward the top of the panel 3. Thesightopening is formed by an aperture cut through the panel 3 insegmental shape and preferably framed with a bezel 61 to give it a morefinished and ornamental appearance. As shown in Fig.2, the bezelcomprises an outer marginal 'frame adapted to fit within the aperture 60in overlapping relation with its edges. may be constructed of metal,vulcanized rubber, bakelite, or other composition, and is provided withtwo or more screws 63 arranged on its opposite sides with their headsembedded therein. A flat strip 64 of transparent material such asCelluloid is placed at the back of the aperture 60 overlapping its edgesand provided with suitable holes for receiving flanged sleeve-nuts 65which screw on to the screws 63. ln this way the'bezel 61 and itstransparent window 64 are clamped aga-inst opposite sides of the panel 3to hold them in place in the aperture 60. The window 64 is marked orscored with a hair line withy which the. graduation-marks on the dialregister.

The upper rim of the dial 50 is preferably illuminated from the rear bymeans of a small lamp 66 held in a socket 67 carried ou the main strutor brace 8 of the mounting. t has been previously rnoted that the strutor brace 8, besides'4 being supported `from the hub 7, is attached tothe panel 3 at another point and the location of this point may bevaried somewhat in different adaptations of the invention. Asillustrated in Fig. 2, the upper portion of the strut or brace 8 extendsforwardly at right-angles to its vertical portion in a leg 68 which isbent upwardly again at 69 to adapt itto abut the rearward face of thepanel 3. The

This outer frame of the bezel 61 serted" throifgh a suitable holedrilled throughV the .panel 3. -'l`he stud 70 is of -hollow constructionto adapt it to receive a spindle or shaft- 71 which carries the ngerlknob or button 6 held fast on its forward end by a cross-pin 7The-button 6 serves as a means for operating a switch 75, see Figs. 3and 4, for controlling the current to the lamp 66. The socket 67 tor thelamp 66 is mounted on the bent-over leg 68 of the strut 8, and extendingupwardly therefrom is a right-angled Contact-arm 76. A secondcontact-arm 77 projects upwardly from the 'back ot the strut 8, see Fig.3, and reaches out to one side with a contact 78 at its end adapted tobe sprung against a similar contact 79 on the arm 7 6. A suitable cam80, held fast on the end of the shaft 71 by means of a hub 81 andset-screw 82, is arranged with its eccentric rimadapted to engage. theback of the contact-arm 77 to spring the latter over to bring thecontacts 78 and 79 into engagement. v As shown in Figs. 2, 3 and 4,suitable conductor wires 83, 84 extend from the switch to the battery orother source of current, not herein illustrated, one of them beinggrounded in the strut 8 and the other connected tothe arm 77: it beingunderstood that the arm 77 is suitably insulated from the strut 8. Byturning the knob or button 6 the switch is closed to supply current tothe lamp 66 whereby the latter will bevlighted to illuminate the dialfrom the rear so that its graduations and indicia will be more clearlyvisible through the sight-opening 4.

As another preferred form of construction for attaching the upper end ofthe. strut 8. or iny other words the whole mounting, to the panel 3 Imay adapt it to be fastened t-o the bezel which is inserted in thesightopenng 4, see Figs. 6 and 7. In this simplitied form ofconstruction the strut or brace 8 is bent forward at right-angles in theleg 86 which has its forward end bent downwardly at 87 to overlap theedge of the aperture in the panel 3. This extension 87 of the strut 8 isformed at its lower end with a frame 88, see Fig. 7, shaped to theconfirmation of the aperture 60 and overlying its marginal edge ontheback of the panel 3. The front bezel frame 89 tits within the edge ofthe aperture 60 and is provided with metal sleeves 90 embedded in itssides. The sleeves 90 are interiorly threaded to. receive screws 91which are inserted'tlnoughthe back of the frame member 88 on the arm 87.Inserted between the frame 88 andthe rearward side of the panel 3 is atransparentwindow 92 of celluloid or glass, and the screws 91 reachtherethrough and -clamp the parts against the panel, not

only holding the bezel in place inthe aperture 60 but also securelyattaching the upper end of the strut 8 to the panel.

Figures 8 and 9 illustrate still another embodim'ent ot the invention inwhich the parts are simplified to afurther extent and the switch for thelamp embodied in the adjusting knob 5. In this forni ot constructionthe. hub 94 which serves as a bearing-member for t-he operating-spindle95 is attached to the panel 3 by means of the nut and washer l 96 and 97in substantially the same manner as previously explained. The strut orbrace 8 is support-ed at the rearward end of the hub 94 and is bentforwardly at the top in the leg 98 and then extended upwardly in an arm99 which abuts the rearward face of the panel 3, being secured theretoby means of' the bolt 100 and nut 101. With this method of supportingthe mounting or itment on the back of the panel 3 the latter is drilledwith only one additional hole to accommodate the bolt 100, the hole forthe hub or bearingmelnber 94 being required in all instances toaccommodate the operating-shaft. The strut 8 is attached to the rearwardend of the hub 94 and abutting its rearward face is an arm 102 whichserves as a means forsupporting the switch for the illuminating lamp 66whose socket 67 is held on the leg 98 of the strut 8. The strut 8 andthe arms 102 are secured fixedly in place on the reduced end of the hub94 by riveting over the end of the latter.

Carried on the arm 102 is a conventional form of` switch 105 comprisingtwo springarms 106 and 107 having contacts 108 at their ends. Theoperating-shaft 95 is made tubular, as shown in Fig. 8, and rotatabletherein is a rod or spindle 110 which projects through the linger-knob 5and carries a knurled button 111 at its outer end. On the linner end ofthe spindle 11() is a disk-shaped cam 112 'having one of its sidesattened ot'f at 114. When the arm 106 of the switch 105 engagesthisflattened tace 11,4 of the cam 112 it will be positioned away fromthe arm 107 so that the contacts 108 at the ends of the arms will beseparated as shown in Fig. 9. When, however, the cam 112 is rotated itscylindrical portion will ride against the arm 106 to spring it towardsthe arm 107 to engage the contacts 108 to close the circuit. The turningmovement of the arm 1.12 is limited by astop 115 on the arm 102 which isengaged by detent shoulders 116 and 117 formed in the edge of the cam.It will be understood, of course, that the switch 105 is suitably wiredto the socket of the lamp 66 and connected to the battery or othersource of current, these wiring connections not being shown in thedrawings as `they may be `ofthe usual arrangement. y

which engages between the overlapping edges of the plates 41 and 42 inthe same manner as previously explained in connection with Figs. 1 to 5of the drawings. In the con-struction shown in Figs. and 9, however, theannular plates 0r sectors 41 and 42 are attached'to a diiferent form ofhubmember 121 and this hub also mounts the rotatable dial 150. The hub121 has a reduced portion 122 which turns in a bearing in the strut 8and is held in place by a washer 123 fitting its further reduced end 124and riveted thereon. The plates 41 and 42 tit over the opposite reducedend of the hub 121 abutting a shoulder 125, against which they are heldby means of a spool-shaped sleeve 126. rIhe sleeve 126 is forced ontothe hub 121 and a set-screw 127 projects through the sleeve and hub tosecure these parts rotatively with the spindle of the instrument to beoperated therefrom.

The dial l150 its over the reduced outer end of the sleeve 126and isclamped in place against a shoulder 129 by means of a screw 130 screwedinto the threaded bore 131 of the sleeve. The main hub 121 is providedwith an axial bore 132 for receiving the end of the spindle or operatingshaftof the condenser or other instrument to which the dial and the adjusting-means are to be attached, it being understood that the hub 121 isheld fast on the spindle of the instrument by means of the set-screw127. In this last described embodiment of the invention the parts aremade simpler and lighter in weight by mounting the dial directly on thehub 121 which connects the operating mechanism to the instrument to beadjusted; and the switch mechanism for the lamp is compacted andrendered more convenient to operate by combining it with theoperating-shaft 95 and knob 5. In the arrangement of the device as lastdescribed the method of operation is substantially the same as beforeexplained, the button 111 being turned to close the switch 105 to lightthe lamp 66 and the instrument being adjusted and the dial 150 rotatedto show the degree of adjustment by turning the knob 5.

With any of the forms of construction as herein shown and described myinventlon provides an extremely simple and compact itment for mountingvarious instruments and their operating-means at the back of the panel.The device also provides for mounting the dial to rotate at the back ofthe panel with means for illuminating it to make its indicia moreclearly visible through the sight-opening in the panel. The whole devicewith its operating-means and dial for the instrument are self containedin a single mounting or titment which may be attached to the panel withal minimum of drilling operations and fitting and which, when onceassembled thereon, provides a rigid and secure mounting without the useof extra brackets and supports attached to a base or sub-panel.Furthermore, and most important, the number of screw-holes in the panelis reduced to an absolute minimum. The mounting or itment may alsoembody the lamp for illuminating the dial and the switch for controllingthe current to the lamp, and in this complete form the device makes aparticularly convenient and eiiicient unit for use 'by amateurs inbuilding or assembling radio-receiving sets. Moreover, the improvedconstruction may be used in factory built sets and for this purpose willconserve space and make for more economical cost of manufacture due tothe simplicity of its construction and the relatively small number ofparts employed. At the same time, the construction and arrangement ot'the device is such that an extremely sensitive and accurate adjustmentmay be secured for the instrument connected with theoperating-mechanism, and the apparatus is therefore highly efficient forthe purpose intended. 4

It is obvious that other modifications besides those herein illustratedmay be made in the construction and arrangement of the parts of thedevice without departing from the spirit and scope of the invention.Therefore, without limiting myself to the exact embodiment of theinvention as herein shown and described, I claim:

1. In affitment for radio apparatus, the combination of a bearing-memberfor insertion through an opening in the panel of a radio set, means forsecuring the bearingmember to the panel, a framework supported from saidbearing-member and adapted to serve as the sole support for a ra'dioinstrument, an operating-shaft journalled in the bearing-member, meansfor attaching the instrument to the framework, and gearing between theoperating-shaft and the instrument shaft and on the same side of thepanel as the said instrument for effecting tine adj ustlnent of theinstrument.

2. In a iitment for radio apparatus, the combination of a bearing-memberfor insertion through an opening in the panel of a radio set, means forsecuring the bearing member to the panel, an operating-shaft journalledin said bearing-member, a framework supported from said bearing-memberand adapted for attachment at another point ill) on the panel to bracethe bearing-membertherefrom, means rotatable on the framework andadapted for connection with the spindle of a radio instrument to adjustthe latter, and gearingconnecting the operatingshaft to operate saidadjusting-means.

In a titment for radio apparatus, the combination of a bearing-memberfor insertion through an opening in the panel of a radio set, means forfixedly securing the bearing-member to the panel, an operatingshaftjournalled in said bearing-member and projecting through the panel, aknob on said shaft, a framework supported from the bearing-member at therear of the panel, means on the framework for attaching it to the panel,a hub rotatable on the framework and adapted for connection with thespindle of a radio instrument to adjust the latter, and gearingconnecting the operating-shaft to rotate the hub.

4. In a litment for radio apparatus, the combination of a bearing-memberadapted for insertion through the panel of a radio set, means forfixedly securing the bearingmember to the panel, anoperating-shaftjournalled in said member, a strut for bracing thebearing-member from the panel, means rotatable on the strut and adaptedfor connection with the spindle of a radio instrument to adjust thelatter, and gearing for rotating said adjusting-means lfrom theoperating-shaft.,

5. In a itment for radio apparatus, the combination'of a bearing-memberadapted for insertion through an opening in the panel of a radio set,means for fixedly securing the bearing-member to the panel, anoperating-shaft journalled in said bearingmember, a strut supported from,said bearing-member and adapted for attachment to the panel at a pointremoved from said member, a hub rotatable on the strut and adapted forconnection with the spindle of a radio instrument, a dial carried bysaid hub at the rear of the panel, and gearing connecting theoperating-shaft torotate the llul to adjust the instrument and turn the6. In a fitment for radio apparatus, the combination of-a bearing-memberadapted for insertion through an opening in I the panel of a radio set,means for clamping said bearing-member to the panel, an operating shaftjournalled in said bearing-mem` ber, a framework extending from thebearing-member at the rear of the panel, means on the framework forfastening it to the panel, adjusting-means rotatable on the frameworkand adapted for connection with the spindle of a radio instrument tosupport the latter therefrom, means for clamping the Ainstrument to theframework, and gearing connecting the operating-shaft to rotate theadjusting-means.

7. In a itment for radio apparatus, the combination of a bearing-memberadapted for insertion through an opening in the panel of a radio set,means to attach the bearing member to said panel, an operatingshaftjournalled in said bearing-member, a strut supported from saidbearing-member, means on the strut for attaching it to the back of thepanel, a hub rotatable on the strut and adapted for connection with thespindle of a radio instrument, means for clamping the instrument t0 thestrut, a dial rotatable with the hub at the rear of the panel, gearingconnecting the operatingshaft to rotate the hub and dial, and a lampmounted on the strut at the back of the dial in position to illuminatethe latter.

8. In a fitment for radio apparatus, the combination of abearing-mei'nber adapted for insertion through an opening inthe panel ofa radio set, means for clamping the bearing-member to the panel, anoperatingshaft journalled in said bearing-member to adapt it to projectthrough the panel, a strut supported from the bearing-member, means forattaching the strut to the panel at a point removed from thcbearing-meniber,`means rotatable on the strut and adapted for attachmentto the spindle of a radio instrument to adjust the latter, means forrotating said adjusting-means from the operating-shaft, a dial rotatabletherewith at the rear of the panel, a lamp mounted on the strut inposition to illuminate the dial, and a switch operable from the front ofthe panel to control the current to the lamp.

9. In a itment for radio apparatus, the combination of a bearing-memberadapted for insertion through an opening in the panel of a radio set, anoperating-shaft journalled in said bearing-member, a mounting for aradio instrument supported on said bearing-member and adapted forattachment to the panel at a point removed from the bearing-member,adjusting-means rotatable on said mounting and adapted for connectionwith the spindle of the radio instrument, means connecting theoperating-shaft to rotate said adjusting-means, a dial rotatable withsaid adjusting-means at the back ofthe panel to exhibitits indiciathrough a sight-opening in the panel, a bezel adapted to fit thesight-opening in the panel, and means for attaching the mounting t0 thebezel to secure the parts to the panel.

10. In a fitment for radio apparatus, the

combination of a bearing-member adapted for insertion through an openingin the anel of a radio set, an operating-shaft Journalle'd in saidbearing-member, a mounting for a radio instrument supported on saidbearing-member and adapted for attachment to the panel at a pointremoved from the bearing-member, adjusting-means rotatable on saidmounting and adapted for connection with the spindle of the radioinstrument, means connecting the operatingshaft to rotate saidadjusting-means, a dial rotatable With said adjusting-means at the backof the panel to exhibit its indicia through a sight-opening in thepanel, a bezel adapted .to lit the sight-opening, means for attachingthe mounting to the bezel to secure the parts to the panel, a lampsupported on the mounting at the rear of the dial, and a switch forcontrolling the current to the lamp.

11. In a fitment for radio-receiving sets, the combination of abearing-member adapted for insertion through an opening in the panel ofthe set, a mounting for a radio instrument supported from saidbearing-member, means rotatable on t-he mounting for Connection with theSpindle ot a radio instrument to adjust the latter, an operatingshaftjournalled in the bearing-member, a friction member on said shaft, and afriotion annulus rotatable with the adjustingm'eans and adapted to beengaged by t-he friction member to turn the instrument spindle.

l2. In a titment for radio-receiving sets, t-he combination of abearing-member adaptA ed for insertion through an opening in the panelof a radio set, a mounting supported on said bearing-member andattaohable at another point to the rear of the panel, adjustinganeansrotatable on the mounting and adapted for connection with the spindle ofa radio instrument, a dial rotatable with said adjusting-means at therear of the panel7 an operating-shaft journalled in the bearing-member,means connecting the operating-shaft to rotate the adjusting-means anddial, a lamp carried on the mounting at the` rear of the dial, a rodextending axially ot' the operating-slm'lt to project through the panel,and a switch operable Jfrom said rod to control the current for thelamp.

In testimony whereof l aix my signature.

PYAM L. PENDLETON.

